Most Christian believers are uncertain as to which part of the Bible they must observe, the Old Testament or the New Testament. Salvation is through faith in and obedience to Jesus Christ. Jesus Christ is the only way and He gives eternal life to those who believe in Him and therefore obey Him. As Jesus also said, and we read in Luke 16:16 “The Law and the Prophets were proclaimed until John, ( John the Baptist) since that time the gospel of the kingdom of God has been preached and every one
is forcing his way into it.”
The gospel of the kingdom is the words of Jesus Christ. Jesus Christ is the king of the kingdom of God, and the only way to inherit His kingdom, to become part of His kingdom, is to accept Him as our King, our Lord, and our Master and to obey Him, to serve Him, and He gives salvation to those who obey Him. The words of Jesus, His commands, His instructions, that He preached and delivered, as they are also recorded in the gospel, Matthew, Mark, Luke and John, those are the words of eternal life. If we do not obey those words, the words of Jesus, we will perish. If we accept Jesus Christ and obey His words, repent and are baptized in water, and live as H commanded, then He will reveal Himself to us. He will give His Holy Spirit in us to guide and teach us. We will know Him for real. The words of Jesus are the words of eternal life.
The law of Moses and the prophets could not bring salvation. The penalty of disobeying the Law, was death. There was no room for repentance, but Jesus Christ brought grace and mercy. Every sinner that accepts Jesus Christ and obeys Him, who repents and is baptized in water, every such person receives grace and mercy. His sins are forgiven and if he stays with Jesus, does not return to his sin, but follows and obeys Jesus, serves Him as Lord and Master, then he becomes part of the kingdom of God, and if he endures with Jesus until the end, he has the hope of eternal life. Observing the Law of Moses and the prophets does not lead to eternal life.
We cannot serve two masters. Either we serve and obey Jesus Christ or we jump around between Old and New Testament and then we become deceived and confused. The writings of the Apostles in the New Testament, the letters of Paul, Romans Corinthians, Ephesians, Galatians, the letters of Peter and John, the book of Revelation, all of those point back to Jesus. The Apostles preached Jesus Christ, His gospel, nothing else. The words of Jesus are the words of eternal life. We have to obey Jesus Christ to have life. Jesus Christ gives understanding to those who follow and obey Him, who receive their guidance from Him and they understand that they can only serve one master, and that is Jesus Christ. Jesus gives them understanding of the Scriptures because Jesus Christ is our only teacher. Jesus Christ gives them understanding of the Scriptures and they are not confused, because Jesus Christ is the final authority. Those who disobey Him will perish.
We have to obey the words of Jesus and be led by Him, be led by His Holy Spirit that He gives to those who obey Him, to know the truth and to walk in truth and to gain understanding. There is only one way to have eternal life and that is obey the words of Jesus. Obey Jesus Christ, seek Him with all your heart and He will reveal Himself to you. He will teach you and He will guide you and you will not be confused because you will be serving and following the Master. Go and read the words of Jesus in the gospel Matthew, Mark, Luke and John. Pray, obey Him ,repent and be baptized. Seek Him with all your heart. He will fill you with the Holy Spirit and He will give you understanding and you will not be confused any more. The words of Jesus are the words of eternal life. Man will not live from bread alone but from every word that proceeds from the mouth of God. Jesus guides His sheep. Those who are being led by the Spirit of God, they are the sons of God, and they have understanding of the kingdom of God. You only get that understanding when you obey Jesus and you seek and follow Him. He will guide you every step of the way until the very end. Without Jesus we can do nothing. Read the words of Jesus in the gospel Matthew, Mark, Luke and John. Obey Him, repent and be baptized, be filled with the Holy Spirit and Jesus will give you understanding and then you will understand the rest of the scriptures.
May Jesus bless you.