'Know the Lord' in the Bible

And I will betroth you to Me in faithfulness.Then you will know the Lord.

Their deeds will not allow themTo return to their God.For a spirit of harlotry is within them,And they do not know the Lord.

“So let us know, let us press on to know the Lord.His going forth is as certain as the dawn;And He will come to us like the rain,Like the spring rain watering the earth.”