In the Parable of the Loving, Father, the Father's kiss speaks of ardent affection for the prodigal son.
Today, we have this ardent love because of Jesus:
"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." (John 3: 16)
"Beloved, if God so loved us, we ought also to love one another." (1 John 4:11)
"Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not." (1 John 3: 1)
So, why does God love us so much? Because He is love!
"He that loveth not knoweth not God; for God is love" (1 John 4: 8)
"And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him." (1 John 4: 16)
More specifically, God through Christ Jesus took us out of our dead status in Adam and made us alive in His Son:
"For if by one man's offence death reigned by one; much more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.)" (Romans 5: 17)
"But God, who is rich in mercy, for his great love wherewith he loved us, 5Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;) 6And hath raised usup together, and made us sit together in heavenly places in Christ Jesus:" (Ephesians 2: 4-6)
"Herein is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world." (1 John 4: 17)
We are accepted in Beloved Jesus - and made like Him ,transformed from glory to glory through His Holy Spirit (2 Corinthians 3: 18)
So, we can know and believe that our Father loves us, because of Jesus.