9Then the king called to Ziba, Saul's servant, and said unto him, I have given unto thy master's son all that pertained to Saul and to all his house." (2 Samuel 9: 7-9)
David, a picture of God the Father, cut a covenant for us through His Son Jesus, who is typified in Jonathan, i.e. the Gift of God.
"What shall we then say to these things? If God be for us, who can be against us? 32He that spared not his own Son, but delivered him up for us all, how shall he not with him also freely give us all things?" (Romans 8: 31-32)
"17Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed it by an oath: 18That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us: 19Which hope we have as an anchor of the soul, both sure and stedfast, and which entereth into that within the veil; 20Whither the forerunner is for us entered, even Jesus, made an high priest for ever after the order of Melchisedec." (Hebrews 6: 17-19)
Those "two immutable things" that prove God is faithful? God the Father and God the Son forming the New Covenant, and Christ Jesus today is our representative at God's right hand:
"And what is the exceeding greatness of his power to us-ward who believe, according to the working of his mighty power, 20Which he wrought in Christ, when he raised him from the dead, and set him at his own right hand in the heavenly places," (Ephesians 1: 19-20)
"4But 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 us up together, and made us sit together in heavenly places in Christ Jesus:" (Ephesians 2: 4-6)
Now, like Mephibosheth, many Christians look at themselves and go: "Why is God being good to me? I did not do anything to deserve this."
The reason why God our Father blesses us? Because of His Son Jesus. It is not about us, or anything that we have done.
It is all about Jesus, and what He has done for us: