2 Corinthians 4:15 -  For all things are for your sakes, that grace, having spread through the many, may cause thanksgiving to abound to the glory of God.

Scripture References:

Being Thankful -

Eph 5:20
1Thess 5:16-18
Col 3:15
Ps 107:1
2 Cor  2:14
Phil 4:6-7
2 Cor 9:11
Ps 95:2
Col 2:7