There they could strengthen, instruct, and teach the newly converted, preparing them to receive the Holy Mysteries and the gifts of the Holy Spirit.
This happened after hands had been laid on the Apostles, that is, after they had been bound. Clearly, reverence for the miracle of the Apostles' speaking in various tongues grew a hundredfold in its power of influence.
Those prepared for faith by a new miracle, the healing of the lame man, felt this power. In essence this miracle was lesser than the first, but it was more concrete, more evident, and therefore more striking.
It acted first upon hearts and minds, and then upon the will, in the face of an unfitting persecution of holy wonderworkers and wondrous God-speaking preachers.
Drawing attention to this persecution, blessed Theophylact says: "Turn your gaze to the Jews' progress in malice and shamelessness. Earlier, during Christ's time, they sought a man to betray Him."
"Now they themselves lay hands on them, having become more daring and shameless after the Cross. It says that the captain of the temple was with them."
"This was so that, by such circumstances, they might give the matter the character of a public charge and make it seem not their own. They always try to act so."
"And they put them in custody until the morning. Thus the Jews acted with the Apostles and kept guard over them. Meanwhile the lengthened time made the Apostles more fearless."