'Devotion' in the Bible

“Go and proclaim in the ears of Jerusalem, saying, ‘Thus says the Lord,“I remember [earnestly] the lovingkindness and devotion of your youth,Your time of betrothal [like that of a bride during the early years in Egypt and again at Sinai],When you followed Me in the wilderness,Through a land not sown.

But You, O Lord, know me [and understand my devotion to You];You see me;And You examine the attitude of my heart toward You.Drag out the faithless like sheep for the slaughter [O Lord]And set them apart for the day of slaughter.