Jesus Christ is the same yesterday, today and forever. God is the same person He has always been.
The God of the Old Covenant is also the God of the New Covenant.
The Old Covenant and the New Covenant are two different ways in which humanity relates to God. In the Old Covenant, if we do good, we are blessed but if we do bad, we are cursed. The Old Covenant is based all on our works and righteousness.
In the New Covenant, we are blessed not based on our works, but based on the finished work of Jesus. Jesus, as the mediator of the New Covenant, has secured for us all the blessings of God and we receive them through faith. The New Covenant is based solely on Jesus’ works and His gift of righteousness to all who believe.
You are either in the Old or the New; you cannot be in both at the same time. In the New Covenant, all of the blessings and promises of God are ‘Yes!’ and ‘Amen!’ because of Jesus.
We have a confidence that God will always say “Yes!” as we believe for His blessings.
These two covenants do not mean that God has changed.
In the Old Covenant, God hated sin; well, in the New Covenant, God equally hates sin. God is still holy and righteous. Any preacher who uses the New Covenant to make light of sin clearly does not know God.
There is a big difference between knowing a covenant and knowing the God of the Covenant. The New Covenant is not the goal, but a means by which we enter into a loving relationship with God. The New Covenant enables relationship and intimacy with God.
If you listen carefully to a preacher, you can tell if he or she really knows God. A preacher who refuses to speak against sin or preach repentance does not understand the New Covenant. You cannot read the Bible or listen to preachers like Paul or Peter and conclude many of the things preached today.
Paul preaches grace and yet warns against sin; you see this throughout the Bible. God has called us preachers to bring people into the knowledge of God and eternal life. There is a big difference between knowledge of a doctrine and a life in the Spirit. Repentance is key to living in eternal life and experiencing oneness with God.
Here is my advice: read the Word of God and believe it!
Read it like a child with the Holy Spirit and you will naturally walk in the truth. The goal of our faith is essentially Christ in us. This is an intimate living experience with Jesus that transforms us into His image.