'Waver' in the Bible

“If you will return, O Israel,” says the Lord,“If you will return to Me,And if you will put away your detestable things and remove your man-made gods from My sight,And not stray or waver,

“How long will you hesitate [to return],O you faithless and renegade daughter?For the Lord has created a new thing in the land [of Israel]:A woman will encompass (tenderly love) a man.”

But he did not doubt or waver in unbelief concerning the promise of God, but he grew strong and empowered by faith, giving glory to God,

And have mercy on some, who are doubting;