Now are we sure that you know all things, and need not that any man should ask you: by this we believe that you came forth from God.
are.
John 16:17 Then said some of his disciples among themselves, What is this that he saith unto us, A little while, and ye shall not see me: and again, a little while, and ye shall see me: and, Because I go to the Father?
John 5:20 For the Father loveth the Son, and sheweth him all things that himself doeth: and he will shew him greater works than these, that ye may marvel.
John 21:17 He saith unto him the third time, Simon, son of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said unto him, Lord, thou knowest all things; thou knowest that I love thee. Jesus saith unto him, Feed my sheep.
by.
John 17:8 For I have given unto them the words which thou gavest me; and they have received them, and have known surely that I came out from thee, and they have believed that thou didst send me.
and that You have no need for anyone to question You.
Here, the disciples express their belief that Jesus' wisdom and authority are self-evident, requiring no external validation. This statement can be seen as a response to Jesus' earlier teachings and actions, which have consistently revealed His divine authority (John 5:19-30). In the cultural context of the time, rabbis and teachers were often questioned to test their knowledge and authority. The disciples' statement indicates their recognition that Jesus transcends human teaching and understanding.
Because of this, we believe that You came from God.”
This declaration of faith is a pivotal moment for the disciples, affirming their belief in Jesus' divine origin. Throughout the Gospel of John, Jesus has made claims about His relationship with the Father (John 5:36-37, John 8:42). The disciples' confession aligns with the prologue of John, which states that Jesus is the Word made flesh, sent from God (John 1:14). This belief is foundational to Christian doctrine, emphasizing Jesus as the fulfillment of Old Testament prophecies concerning the Messiah (Isaiah 7:14, Micah 5:2).
• The disciples have been puzzled by Jesus’ words about His death and resurrection (John 16:17-19), yet His precise knowledge of their unspoken questions suddenly convinces them.
• By saying “You know all things,” they are acknowledging Jesus’ omniscience—a divine attribute also affirmed in John 2:24-25 and John 21:17 (“Lord, You know all things; You know that I love You”).
• Their insight grows from partial to clearer faith, showing how Jesus patiently leads believers into fuller understanding (John 14:26; Colossians 2:3).
• Jesus’ answers come before the questions are voiced, proving His authority and self-sufficiency as Teacher (Matthew 7:28-29).
• John 5:34 records Jesus saying, “I do not receive testimony from man,” echoing this thought that He requires no human verification.
• The leaders who tried to trap Him “dared not ask Him any further question” (Luke 20:40), an historical snapshot of how His wisdom silences opposition. Believers can therefore rest in the certainty that His word stands without revision or correction.
• The disciples connect Jesus’ omniscience with His divine origin. Because He knows all things and needs no questioning, He must be the One sent from the Father (John 3:13; 6:38).
• Peter had already confessed, “We have come to believe and to know that You are the Holy One of God” (John 6:69); here the group echoes that conviction.
• Faith is not blind but grounded in observable truth: fulfilled prophecy, perfect insight, and flawless authority. Their confession anticipates Jesus’ prayer in John 17:8, “They accepted them and truly understood that I came from You.”
• Genuine belief always pivots on who Jesus is—God’s Son come in the flesh (1 John 4:15)—and expresses itself through trust and obedience.
John 16:30 captures a breakthrough moment for the disciples: recognizing Jesus’ omniscience, they see His unquestionable authority and confess His divine origin. Their declaration models how observing Christ’s perfect knowledge and self-sufficiency leads to confident faith that He truly “came from God.”
(30) Now are we sure that thou knowest all things.--Comp. John 16:19; John 16:23. The "now" is emphatic, as in the previous verse. They see in His present knowledge of their thoughts, and in the light which has come to them from the statements of John 16:28, the fulfilment of the promise which He has made for the future (John 16:23). They think that the day has already come when they shall ask Him nothing, for He knows all things, and communicates to them the fulness of truth.By this we believe that thou camest forth from God.--They had believed this before (John 16:27), but here, as frequently, St. John remembers the development of their faith. (Comp. Note on John 2:11.) They find, in His knowledge of their thoughts (John 16:19), and in the full solution which He gives to their difficulties, ground for a new faith; and upon this new proof of His divinity they have a new faith in Him. (Comp. the instance of Nathanael's faith at the end of John 1) . . .
Verse 30. - Now know we that thou knowest all things. He had answered their unutterable yearning. That which stirred them very deeply on many occasions was this proof that nothing in their hearts was hidden from him. Nathanael was one of them, and now he saw "angels of God ascending and descending on the Son of man." "Thou knowest all things." The idea in their minds does not embrace the full range of human inquiry, nor the depths of Deity, but all the things which are in their hearts to ask him. Their word is true even if in their intention they fall short of ascribing omniscience to their Lord. And thou hast no need that any one should put to thee these inquiries. Thou hast sounded the depths of our hearts, and found out the unutterable and unuttered within us. When we were afraid to ask thee concerning "the little while," thou didst discern our unspoken yearning, and now thou art so establishing thy Divine claim upon our reverence and affection, that we can trust thee to give us all needful illumination when we most require it. In this fact, in this consideration just stated, we find our justification and the cause of our faith. We believe that thou earnest forth from (ἀπό) God (ἀπό differs from the solemnity of the παρά or the ἐκ of Ver. 28. Though Lange makes the ὅτι equivalent to "because," yet generally John gives to the ὅτι which follows a verb after ἐν τούτῳ the sense of "that," thus introducing the object of the verb, though in one place, 1 John 4:13, both constructions are seen in the same sentence. The objective force of "that" is to be preferred here). We believe that thy whole ministry and message is a revelation of God, a coming near to us of the Father. Thy name is "Immanuel, God with us." A question arises whether the disciples in this gush of faith said more than they really meant, and deserved reproof, or whether they had reached an elevation of thought from which they never would absolutely recede.