23 Above all that is to be guarded, keep thy heart, for out of it are the issues of life.

26 Give, my son, thy heart unto me, and let thy eyes watch my ways.

1 My son, forget not my teaching, and let thy heart keep my commandments;2 For length of days, and years of life, and peace, will they increase unto thee.

10 (51:12) Create unto me a clean heart, O God; and a firm spirit renew thou within me.

23 Search me through, O God, and know my heart; probe me, and know my thoughts:24 And see if there be a way of perverseness in me, and lead me on the way of eternity.

2 Try me, O Lord, and prove me; purify my reins and my heart.3 For thy kindness is before my eyes; and I have walked in thy truth.

3 Thou hast proved my heart; thou hast thought of me in the night; thou hast refined methou couldst find nothing: my purpose doth not pass beyond the words of my mouth.4 Among the deeds of men did I observe, by the word of thy lips, the paths of the dissolute.5 My steps held firmly to thy tracks, and my footsteps did not slip.

7 (57:8) Firm is my heart, O God, firm is my heart: I will sing and play.

8 This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, in order that thou mayest observe to do according to all that is written therein; for then shalt thou make thy way prosperous, and then shalt thou have good success.

10 With all my heart have I sought thee: oh let me not wander astray from thy commandments.11 In my heart have I treasured up thy saying, in order that I may not sin against thee.

5 And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy might.6 And these words which I command thee this day, shall be in thy heart:

46 He said unto them, Set your hearts unto all the words which I testify against you this day, so that ye may command them your children, to observe to do all the words of this law.