Confidence In Eternal Life

If we are confident in the Kingdom of Heaven, then we should be confident on having eternal life. In the Bible, do you know the way God gave us eternal life?

John 6:53 Jesus said to them, "I tell you the truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. 54Whoever eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. 55For my flesh is real food and my blood is real drink. 56Whoever eats my flesh and drinks my blood remains in me, and I in him."

According to this verse, even if you have all the faith in the world, without eating Jesus' flesh and blood can you receive eternal life? I say this because it is that important. What is the way to eat Jesus' flesh and blood (according to the Bible)?

Luke 22:14 "When the hour came, Jesus and his apostles reclined at the table. 15And he said to them, "I have eagerly desired to eat this Passover with you before I suffer...19And he took bread, gave thanks and broke it, and gave it to them, saying, "This is my body given for you; do this in remembrance of me."20In the same way, after the supper he took the cup, saying, "This cup is the new covenant in my blood, which is poured out for you."

Many churches do the action, but what is God's appointed time?

Lev. 23:4 " 'These are the LORD's appointed feasts, the sacred assemblies you are to proclaim at their appointed times: 5 The LORD's Passover begins at twilight on the fourteenth day of the first month."

Does your church keep Passover?