2 Chronicles 30:21-23

ASV_Strongs(i)
  21 H1121 And the children H3478 of Israel H4672 that were present H3389 at Jerusalem H6213 kept H2282 the feast H4682 of unleavened bread H7651 seven H3117 days H1419 with great H8057 gladness; H3881 and the Levites H3548 and the priests H1984 praised H3068 Jehovah H3117 day H3117 by day, H5797 singing with loud H3627 instruments H3068 unto Jehovah.
  22 H3169 And Hezekiah H1696 spake H3820 comfortably H3881 unto all the Levites H2896 that had good H7922 understanding H7919 in the service H3068 of Jehovah. H398 So they did eat H4150 throughout the feast H7651 for the seven H3117 days, H2076 offering H8002 sacrifices H2077 of peace-offerings, H3034 and making confession H3068 to Jehovah, H430 the God H1 of their fathers.
  23 H6951 And the whole assembly H3289 took counsel H6213 to keep H312 other H7651 seven H3117 days; H6213 and they kept H7651 other seven H3117 days H8057 with gladness.