Albert Barnes Commentary Ezekiel 47:3

"When the man went forth eastward with the line in his hand, he measured a thousand cubits, and he caused me to pass through the waters, waters that were to the ankles." — Ezekiel 47:3 (ASV)

The ankles - This may coincide with the step gained in the baptism of Cornelius (Acts 10:0), and the opening of the Church to the Gentiles. The dispersion which had followed the martyrdom of Stephen (Acts 11:19) had carried believers into various countries, and so paved the way for the foundation of Gentile Churches.