Hosea 2:20

“I will even betroth thee unto me in faithfulness, etc.] Which lies in keeping the marriage contract inviolable; Christ will never suffer his faithfulness to fail, nor break his covenant; as he is faithful to his Father that appointed him, so he is, and will be, to his church and people, and to every believer, to whom he is espoused; and it is he that makes them faithful unto him, and gives them faith to believe in him, receive, embrace, own, and acknowledge him as their husband: and in this sense some understand it, rendering it, “in faith”f47; so the Targum and others. This is the third time the word “betroth” is used, or this promise made; which, according to Jerome, refers to them…”

“faithfulness--to My new covenant of grace with thee (Th1 5:24; Heb 10:23).”

“And thou shalt know the Lord - This knowledge of God follows on God’s act of betrothal and of love. “We love God, because God first loved us.” And the true knowledge of God includes the love of God. “To love man, we must know him: to know God, we must love Him.” To “acknowledge” God, is not yet to “know” Him. They who love not God, will not even acknowledge Him as He Is, “Supreme Wisdom and Goodness and Power, the Creator and Preserver; the Author of all which is good, the Governor of the world, Redeemer of man, the most bounteous Rewarder of those who serve Him, the most just retributor of those who persevere in rebellion against Him.” They who will not love God, cannot even “know” aright…”

“and: Jer 9:24, Jer 24:7, Jer 31:33, Jer 31:34; Eze 38:23; Mat 11:27; Luk 10:22; Joh 8:55; Joh 17:3; Co2 4:6; Phi 3:8; Col 1:10; Ti2 1:12; Heb 8:11; Jo1 4:6; Jo1 5:20 Hosea 2:21”