'Truly' in the Bible

At that time, the remnant of Israel and the survivors of the house of Jacob will no longer rely on the one who struck them down, but will truly rely on the LORD, the Holy One of Israel.

For the Fire Pit has long been prepared; truly it is for the king; it will indeed be made ready. And its pyre will be deep and wide, with abundant fire and wood. Like a stream of burning sulfur, the breath of the LORD will set it ablaze.

Don't be afraid, because I'm with you; don't be anxious, because I am your God. I keep on strengthening you; I'm truly helping you. I'm surely upholding you with my victorious right hand."

"Truly you are a God who hides himself, O God of Israel, the Savior.