'Alternately' in the Bible

and another third at the gate of Sur, and a third at the gate behind the runners, shall guard the post of the palace alternately.

Shemaiah, the son of Nethanel the scribe, from the Levites, recorded them in the presence of the king, the officers, Zadok the priest, Ahimelech the son of Abiathar [the priest who escaped Saul’s massacre at Nob], and the heads of the fathers’ households of the priests and of the Levites; one father’s household taken for Eleazar and one taken for Ithamar.

And they sang alternately together in praising and giving thanks to Jehovah: For he is good, for his loving-kindness endureth for ever toward Israel. And all the people shouted with a great shout to the praise of Jehovah, because the foundation of the house of Jehovah was laid.

in that they show the work of the Law written in their hearts, their conscience bearing witness and their thoughts alternately accusing or else defending them,