'Devotedly' in the Bible

“I love You [fervently and devotedly], O Lord, my strength.”

Establish Your word and confirm Your promise to Your servant,As that which produces [awe-inspired] reverence for You.

and whoever in this way devotedly serves Christ, God takes pleasure in him, and men highly commend him.

If Timothy comes, see to it that [you put him at ease, so that] he has nothing to fear in regard to you, for he is [devotedly] doing the Lord’s work, just as I am.