Wait for the promise of God, the Holy Spirit, and pray for it

And when they were all together, with him, he gave them orders not to go away from Jerusalem, but to keep there, waiting till the word of the Father was put into effect, of which, he said, I have given you knowledge
Acts 1:4

But you will have power, when the Holy Spirit has come on you; and you will be my witnesses in Jerusalem and all Judaea and Samaria, and to the ends of the earth.
Acts 1:8

And they all with one mind gave themselves up to prayer, with the women, and Mary the mother of Jesus, and his brothers.
Acts 1:14

Be in communion with the Lord

And he took bread and, having given praise, he gave it to them when it had been broken, saying, This is my body, which is given for you: do this in memory of me.
Luke 22:19

And in the same way, after the meal, he took the cup, saying, This cup is the new testament, made with my blood which is given for you.
Luke 22:20