-- God saw that every imagination of the thoughts of man was evil continually --- Genesis 6:5
-- the earth was filled with violence --- Genesis 6:11
-- all flesh had corrupted his way on the earth --- Genesis 6:12
-- the earth is filled with violence --- Genesis 6:13
-- Sarah laughed within herself, the Lord knew Sarah laughed --- Genesis 18:12-13
-- the Lord searches all hearts, and understands the imaginations of the thoughts --- 1 Chronicles 28:9
-- all my desire is before you, and my groaning is not hid from you --- Psalm 38:9
-- God knows the secrets of the heart --- Psalm 44:21
-- The Lord knows the thoughts of man --- Psalm 94:11
-- Search me, O God, and know my heart and thoughts --- Psalm 139:23
-- The thoughts of the wicked are an abomination to the Lord --- Proverbs 15:26
-- Woe to them that seek to hide their counsel from the Lord --- Isaiah 29:15
-- their thoughts are thoughts of iniquity --- Isaiah 59:7
-- For I know their works and their thoughts --- Isaiah 66:18
-- How long shall your vain thoughts lodge within you --- Jeremiah 4:14
-- I will bring evil upon this people, even the fruit of their thoughts --- Jeremiah 6:19
-- Lord of hosts, that sees the reins and the heart --- Jeremiah 20:12
-- the Lord knows the things that come into your mind --- Ezekiel 11:5
-- your Father knows what you need before you ask --- Matthew 6:8; Luke 12:30
-- out of the heart proceed evil thoughts --- Matthew 15:19; Mark 7:21
-- your Father knows that you have need of these things --- Luke 12:30
-- we must all be judged of Christ for our deeds, the things done, the results of out thoughts --- 2 Corinthians 5:10
-- the word of God is a discerner of the thoughts and intents of the heart --- Hebrews 4:12
-- I, God, will give to every one of you according to your works --- Revelation 2:23
-- the devil will cause all to receive a mark in their hand or forehead --- Revelation 13:16
-- if any man worship the beast, receiving his mark in his forehad or in his hand --- Revelation 14:9
-- the saints keep the commandments of God and the faith of Jesus --- Revelation 14:12
-- those worshipping the beast receive his mark on their foreheads or in their hands --- Revelation 20:4
-- great white throne judges the dead according to their works --- Revelation 20:12-13

God wants to "know" that a man loves him.

God created man in his own image with a free will to make choices.
God desires all men to choose to love him.
God will know that a man loves him, if that man will keep his commandments.
It is by the deeds of a man that God knows that man loves him.

John 14:15 KJV
[15] If ye love me, keep my commandments.

John 14:21 KJV
[21] He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.

John 14:23 KJV
[23] Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.

John 14:24 KJV
[24] He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father's which sent me.