“[…] A promise of entering into his rest remains […].”
~Hebrews 4:1

Although Jehovah God rested from his creative works on the “seventh day” of creation, there remains a figurative “sabbath” day into which God’s people will enter. (Gen. 2:2,3; John 5:17) This will be when the earth becomes a paradise free of evil, pain or sin, as was God’s original purpose. (Ps. 37:9-11; Is. 33:24; Matt. 5:3-6; 12:8-13; Luke 13:10-13; John 5:5-9; 9:1-14)
That God’s original purpose of a paradise earth will be accomplished is guaranteed by his own word, which is immutable. (Heb. 6:17,18)
Whether we end up entering into God’s rest in person or through the resurrection, we can be sure that our efforts to listen to him and do what is right are never in vain. (Heb. 6:9,10)