It is clear that Jesus is the only way to salvation and to God.
Rom 10:9 that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved.
When we sincerely confess Jesus as Lord, we have surrendered our lives to Him. He becomes our Lord and Master and we are then His bond servants. His every word becomes our command. The death of our Lord Jesus at Calvary then redeems us and immediately the Holy Spirit dwells within us as His seal of redemption (John 20:21-22).
Rom 8:15 For you did not receive the spirit of bondage again to fear, but you received the Spirit of adoption by whom we cry out, “Abba, Father.”
God then becomes our Father and being His children, the devil no longer has any control or power over us for we have been delivered from Satan or the evil one.
2 Cor 13:5 Examine yourselves as to whether you are in the faith. Test yourselves. Do you not know yourselves, that Jesus Christ is in you?—unless indeed you are disqualified.
We are reminded to examine ourselves whether we are keeping His words and commandments by bearing fruits of righteousness and of the Spirit. Only then He is indeed the Lord of our lives. This is the ultimate test of our faith in Jesus, otherwise we may be disqualified (possibly lose our salvation) if 'Jesus is no longer our Lord'.
2 Tim 4:7 I have fought the good fight, I have finished the race, I have kept the faith.
Paul kept the faith that 'Jesus is his Lord' by obeying His words, will and commandments, thus allowing Jesus to be the finisher of His faith.
Heb 12:2 looking unto Jesus, the author and finisher of our faith, who for the joy that was set before Him endured the cross, despising the shame, and has sat down at the right hand of the throne of God.
James 2:20,26 But do you want to know, O foolish man, that faith without works is dead?... For as the body without the spirit is dead, so faith without works is dead also.
Brethren, try to give one hour every morning reading the NT and another hour every night the OT, so that we can finish the NT every month and the OT every three months. Then we can have a better assurance of knowing His words, commandments and will.