When we believe in our hearts and confess with our mouth the Lord Jesus we are saved and baptized into the body of Christ (Rom 10:9-10; 1 Cor 12:13).
Those who are saved will begin to be conformed into His image (Rom 8:29; 2 Cor 3:18) and we should begin to see:  that they love God and God’s words the final authority in their life (John 14:15), and  that they love others the way that Jesus loves them (John 15:12)?
Calling on and confessing the name of the Lord is not a one-time-for-all thing — we are to continually confess the Lord Jesus on a daily/continuous basis. This is part of the abiding/remaining in Him (John 15:4-6).
Just as when Noah entered into the boat, then all he had to do to endure the flood was stay in the boat, we are baptized into the body of Christ and abide in Him. He preserves us and we are able to endure to the end (Mt 10:22) by remaining/abiding in Him (John 15:4-6).
We are filled with His Holy Ghost and by having the same Spirit are thereby known by Him (Mt 7:21-23; Rom 8:11) — and not just filled one time and that’s it, but “be being filled” on a continuous/daily basis (Eph 5:18; Gal 5:16).
The Lord looks on the heart and knows people’s hearts (1Sam 16:7). No one person will be completely without error in all matters and they don’t need a theological degree to get saved.
Just call out to Jesus (Acts 2:21; 22:16) and continue to confess the Lord Jesus (Rom 10:9-10). He will begin to transform you into His image (Rom 8:29; 2 Cor 3:18).
Romans 10:9-10 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.John 14:15,21 If ye love me, keep my commandments … He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.1 Cor 12:13 For as the body is one, and hath many members, and all the members of that one body, being many, are one body: so also is Christ. For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.John 15:4-6 Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me. I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing. If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned.Mt 10:22 And ye shall be hated of all men for my name’s sake: but he that endureth to the end shall be saved.Mt 7:21-23 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven. Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.