Psalm 18:2-4, 47-51 and Deuteronomy 6:2-6

Psalm 18:2-4, 47-51
2 I will love you, O Lord my strength.
3 The Lord is my firmament, my refuge, and my liberator. My God is my helper, and I hope in him: my protector, and the horn of my salvation, and my support.
4 Praising, I will call upon the Lord. And I will be saved from my enemies.
47 The Lord lives, and blessed is my God, and may the God of my salvation be exalted:
48 O God, who vindicates me and who subdues the people under me, my liberator from my enraged enemies.
49 And you will exalt me above those who rise up against me. From the iniquitous man, you will rescue me.
50 Because of this, O Lord, I will confess to you among the nations, and I will compose a psalm to your name:
51 magnifying the salvation of his king, and showing mercy to David, his Christ, and to his offspring, even for all time.
Deuteronomy 6:2-6
2 So may you fear the Lord your God, and keep all his commandments and precepts, which I am entrusting to you, and to your sons and grandsons, all the days of your life, so that your days may be prolonged.
3 Listen and observe, O Israel, so that you may do just as the Lord has instructed you, and it may be well with you, and you may be multiplied all the more, for the Lord, the God of your fathers, has promised you a land flowing with milk and honey.
4 Listen, O Israel: the Lord our God is one Lord.
5 You shall love the Lord your God with all your heart, and with all your soul, and with all your strength.
6 And these words, which I instruct to you this day, shall be in your heart.