Together

In light of what preacher Luis Sena had been talking about the past couple of Wednesdays for bible studies, a Biblical worldview, I decided to go back to the Book of Acts and learn about the beginnings of the church and the first Christians. As I began to read one word jumped out at me, in spanish its unánimes, in english it's the phrase "with one accord".
The greek word is Homothumadon, and it means "with one mind, with one accord, with one passion".
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"All these with one accord were devoting themselves to prayer, together with the women and Mary the mother of Jesus, and his brothers."

Acts 1:14
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"When the day of Pentecost arrived, they were all together in one place."

Acts 2:1
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"And day by day, attending the temple together and breaking bread in their homes, they received their food with glad and generous hearts, praising God and having favor with all the people. And the Lord added to their number day by day those who were being saved.

Acts 2:46-47
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"And when they heard it, they lifted their voices together to God and said, "Sovereign Lord, who made the heaven and the earth and the sea and everything in them..."

Act 4:24
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"Now many signs and wonders were regularly done among the people by the hands of the apostles. And they were all together in Solomon's Portico. None of the rest dared join them, but the people held them in high esteem."

Act 5:12-13

Want to take a guess at what that one Passion, which drove them to prayer, to praise God, to preach the gospel, to love their brethren, to break bread, attend the temple, etc., is?