Ezra 3:6 Commentary - English Annotations on the Holy Bible by Matthew Poole
To offer burnt-offerings, and the other sacrifices which were to be offered with them upon that day, being the feast of trumpets, Num 29:1, &c. Burnt-offerings are oft put for all sacrifices, as hath been observed once and again.
The foundation of the temple was not yet laid; though it is probable they had done something towards the removing of the rubbish, and preparing the way for it.
Consult other comments:
Ezra 3:6 - Joseph Benson’s Commentary on the Old and New Testaments
Ezra 3:6 - The Cambridge Bible for Schools and Colleges
Ezra 3:6 - Ellicott's Commentary for English Readers (Old and New Testaments)
Ezra 3:6 - John Gill's Exposition of the Entire Bible
Ezra 3:6 - Biblical Illustrator Edited by Joseph S. Exell
Ezra 3:6 - Jamieson, Fausset and Brown's Commentary Critical and Explanatory on the Whole Bible
Ezra 3:6 - English Annotations on the Holy Bible by Matthew Poole
Ezra 3:6 - Old and New Testaments Restoration Commentary
Ezra 3:6 - Scofield Reference Bible Notes
Ezra 3:6 - John Trapp's Complete Commentary (Old and New Testaments)
English Annotations on the Holy Bible by Matthew Poole

Matthew Poole (1624–1679) wrote English Annotations on the Holy Bible, completing the chapters as far as Isaiah 58 before his death in 1679. The rest of the Annotations were completed by friends and colleagues among his Nonconformist brethren. The first printing of the completed edition was in 1685, 2 volumes folio, followed by editions in 1688, 1696 (with valuable chapter outlines added by the editors, Samuel Clark and Edward Veale), and the 4th and definitive edition in 1700, the basis of all others.