Bible Verses About Thanksgiving: Should always accompany prayer

and Mattaniah son of Micha, son of Zabdi, son of Asaph, is head--at the commencement he giveth thanks in prayer; and Bakbukiah is second among his brethren, and Abda son of Shammua, son of Galal, son of Jeduthun.

for nothing be anxious, but in everything by prayer, and by supplication, with thanksgiving, let your requests be made known unto God;

In the prayer continue ye, watching in it in thanksgiving;