The community of believers was of one heart and mind. (Acts 4:32-37)
https://bible.usccb.org/bible/readings/041823.cfm
“Come, my friends, let us be of one heart and one mind.” Almost 50 years ago when I was in seminary we had a class retreat with the spiritual writer, Father Ed Hays. He had spent a week in prayer at Gethsemani Abbey preparing himself for our retreat. He used this phrase as the centering prayer of our time together. He held up a copy of the New Testament and told us, “This is our instruction manual.”