“A threefold cord is not quickly broken.” Ecclesiastes 4:12
“Take his portion, and rejoice in his labor; this is the gift of God.” Eccl 5:19
“Say not thou, What is the cause that the former days were better than these?” Eccl 7:10
“Yet surely I know that it shall be well with them that fear God.” Eccl 8:12
“Whatsoever thy hand findeth to do, do it with thy might.” Eccl 9:10
And of course the famous hippie song about a time to live, a time to die, a time to laugh, and time to mourn, is from Ecclesiastes.