He left this command for us in John 6:53-57, and it is the only place in Holy Scripture in which you will find it:
53 “Truly, truly, I say to you, unless you eat the flesh of the Son of man and drink his blood, you have no life in you (the taken away branch); 54 he who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. 55 For my flesh is food indeed, and my blood is drink indeed. 56 HE WHO EATS MY FLESH AND DRINKS MY BLOOD ABIDES IN ME, AND I IN HIM. 57 As the living Father sent me, and I live because of the Father, so he who eats me will live because of me.”

What does “Truly, truly” mean to you in verse 53? What does “unless” mean?
The body lives because it receives real food sustenance. Starve the body and it will die.
Just as the body needs real sustenance, so does the soul, else it will not bear fruit.
The soul lives by real Divine sustenance, the true presence of Jesus Christ in the Holy Eucharist.

Can we do it:

1. By accepting Him as our our own personal Lord and Savior ?
No. Where does the Bible say that?

2. By the grace of GOD only? Sola Gracias?
No. Where does the Bible say that?

3. By faith in GOD alone? Sola Fides?
No. Where does the Bible say that?

It is simple common sense that since He commanded that we must do something, then doesn’t it stand to reason that He would also tell us how to do it?

Jesus was very clear in what we must do in order to have Him ABIDE in us and we in Him.

Jesus left this command for us in John 6:53-57:

53 “Truly, truly, I say to you, unless you eat the flesh of the Son of man and drink his blood, you have no life in you (the taken away branch);

54 he who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. 55 For my flesh is food indeed, and my blood is drink indeed.

56 HE WHO EATS MY FLESH AND DRINKS MY BLOOD ABIDES IN ME, AND I IN HIM.

57 As the living Father sent me, and I live because of the Father, so he who eats me will live because of me.”