Jesus tells us why God loves those who trust in Him. God’s love is in His Son.
John 16:27 KJV
For the Father himself loveth you, because ye have loved me, and have believed that I came out from God.
John 3:35-36 KJV
The Father loveth the Son, and hath given all things into his hand.  He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.
Psalm 5: 4-12 KJV
 For thou art not a God that hath pleasure in wickedness: neither shall evil dwell with thee.
 The foolish shall not stand in thy sight: thou hatest all workers of iniquity.
 Thou shalt destroy them that speak leasing: the Lord will abhor the bloody and deceitful man.
 But as for me, I will come into thy house in the multitude of thy mercy: and in thy fear will I worship toward thy holy temple.
 Lead me, O Lord , in thy righteousness because of mine enemies; make thy way straight before my face.
 For there is no faithfulness in their mouth; their inward part is very wickedness; their throat is an open sepulchre; they flatter with their tongue.
 Destroy thou them, O God; let them fall by their own counsels; cast them out in the multitude of their transgressions; for they have rebelled against thee.
 But let all those that put their trust in thee rejoice: let them ever shout for joy, because thou defendest them: let them also that love thy name be joyful in thee.
 For thou, Lord , wilt bless the righteous; with favour wilt thou compass him as with a shield.
Psalm 145:13-20 KJV
Thy kingdom is an everlasting kingdom, and thy dominion endureth throughout all generations.
 The Lord upholdeth all that fall, and raiseth up all those that be bowed down.
 The eyes of all wait upon thee; and thou givest them their meat in due season.
 Thou openest thine hand, and satisfiest the desire of every living thing.
 The Lord is righteous in all his ways, and holy in all his works.
 The Lord is nigh unto all them that call upon him, to all that call upon him in truth.
 He will fulfil the desire of them that fear him: he also will hear their cry, and will save them.
 The Lord preserveth all them that love him: but all the wicked will he destroy.