unmovably

And for my owne part, the Lord himselfe hath so firmly by his owne enlightening Spirit so fully convinced me, and settled my soule so unmoveably in his truth, that I assuredly know, that all power in Earth, yea and the gates of Hell it selfe shall never be able to move me or prevaile against me, for the Lord who is the worker of all my workes in me and for me, hath founded and built me upon that sure & unmoveable foundation the Lord Jesus Christ, and I know if ten thousand deaths for my conscience and the cause of my God ...