Believers know that Christ died for our sins, was buried in a borrowed tomb, and after three days, rose from the grave with all power in His hands, according to the Scriptures. He stayed around for an additional 40 days making several appearances to many including His disciples. Christ also gave instructions for His followers:

Matthew 28:18-20
18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.
19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.

Then, He ascended back to Heaven.

Preachers preach the Gospel every week, (and especially this week) going to the Cross, and telling how "He hung His head in the locks of His shoulders and died, was buried in Joseph's new tomb, stayed there all night, Friday, all day Saturday, all night Saturday, but early, Sunday morning, He got up, with all power in His hands, and He sits on the right hand of the Father, interceding for the Saints."

But what we hardly preach/teach is what to do now, after the Cross and after the Resurrection. How do we live, now that our sins are forgiven and we have a right to the "Tree of Life?"

Jesus makes it very clear what we as followers are to do:
1 "Go" (not stand still or keep doing the same thing) is an action word.
2 And "Teach" (which means to instruct someone that doesn't know what they need to know, and in the case, teach about Christ" "All nations" (which would imply not just a particular denomination, which is a division)
3 Interestingly enough is "Baptizing them" which follows "Teach all nations" and
4 "Teaching them to observe all things whatsoever I have commanded you"

Again the main focus is, "Teaching."

The book of Acts is now Activated and instructs us on that the Disciples did, and is a guide to what we believers should be about. You will notice that the following Books, are addressed to the "brethren", or "dearly beloved" or "the church at ________!" All of the Epistles are directed at instruction, to the believers in Christ, telling us how to live and get ourselves in a position to receive Christ when He comes back for a Church;

Ephesians 5:27
That he might present it to himself a glorious church, not having spot, or wrinkle, or any such thing; but that it should be holy and without blemish.

So where is your focus?
Is it continually on the Cross? "He died" implies a past activity, meaning once and for all.
Is it on the Resurrection? "He got up" implies also a past activity, meaning once and for all.
Is it on the Ascension? "He ascended" implies the same past activity that is a done deal.

That leaves us with one direction - "He's coming back" not for a church building, but the church as it relates to the Body of Christ, Believers not denominations.

1 Corinthians 8:6
But to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him.

Ephesians 4:4-6
4 There is one body, and one Spirit, even as ye are called in one hope of your calling;
5 One Lord, one faith, one baptism,
6 One God and Father of all, who is above all, and through all, and in you all.

So where is your focus? (When you learn better, you do better)