There are two purposes of your heart
1. Love God with all your heart
2. Trust God with all your heart.

God never tells us to trust people, nor love anyone above Him. God knows your heart, and He has this to say about it. “The heart is deceitful above all things, And desperately wicked; Who can know it?  I, the Lord, search the heart, I test the mind, Even to give every man according to his ways, According to the fruit of his doings.” (Jeremiah 17:9-10 NKJV).

” Some trust in chariots, and some in horses; But we will remember the name of the Lord our God.”(Psalms 20:7 NKJV).

” You shall love the Lord your God with all your heart, with all your soul, and with all your strength. “(Deuteronomy 6:5 NKJV)

Jesus said to him, “‘You shall love the Lord your God with all your heart, with all your soul, and with all your mind.’ (Matthew 22:37 NKJV).

So he answered and said, “ ‘You shall love the Lord your God with all your heart, with all your soul, with all your strength, and with all your mind,’ and ‘your neighbor as yourself.’ (Luke 10:27 NKJV).

” Trust in the Lord with all your heart, And lean not on your own understanding;  In all your ways acknowledge Him, And He shall direct your paths. Do not be wise in your own eyes; Fear the Lord and depart from evil.  It will be health to your flesh, and strength to your bones.”( Proverbs 3:5-8 NKJV).

Ecclesiastes 9:3-6 NKJV
[3] This is an evil in all that is done under the sun: that one thing happens to all. Truly the hearts of the sons of men are full of evil; madness is in their hearts while they live, and after that they go to the dead. [4] But for him who is joined to all the living there is hope, for a living dog is better than a dead lion. [5] For the living know that they will die; But the dead know nothing, And they have no more reward, For the memory of them is forgotten. [6] Also their love, their hatred, and their envy have now perished; Nevermore will they have a share In anything done under the sun.

So Jesus said, “Are you also still without understanding? Do you not yet understand that whatever enters the mouth goes into the stomach and is eliminated? But those things which proceed out of the mouth come from the heart, and they defile a man.  For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies. These are the things that defile a man, but to eat with unwashed hands does not defile a man.”( Matthew 15:16-20 NKJV)

“For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, thefts, covetousness, wickedness, deceit, lewdness, an evil eye, blasphemy, pride, foolishness. All these evil things come from within and defile a man.”(Mark 7:21-23 NKJV).

” Now to Him who is able to keep you from stumbling, And to present you faultless Before the presence of His glory with exceeding joy, To God our Savior, Who alone is wise, Be glory and majesty, Dominion and power, Both now and forever. Amen.”[Jude 1:24-25 NKJV].