Hebrews 4:9

The Sabbath rest in view is the rest (inheritance) that every generation of believers and every individual believer enters into when he or she, like God, faithfully finishes his or her work. That work involves continuing to trust and obey God (i.e., walking by faith daily as opposed to apostatizing). Christians will enter into our rest, if we have persevered in faith, when we receive our inheritance from Jesus Christ at His judgment seat (1 Corinthians 4:1-5; 2 Corinthians 5:9-10).

Millennial rest in the Promised Land will be the portion of Israel in the future. Walter Kaiser also interpreted the rest as future. He believed that first Israel and then all believers would fulfill this promise by possessing the Promised Land in the Millennium. [Note: Walter C. Kaiser Jr., "The Promise Theme and the Theology of Rest," Bibliotheca Sacra 130:518 (April-June 1973):149-50.] However this passage seems to be referring to eternal rest for all believers of which the Millennium is just the beginning. Israel will be the primary people God blesses and makes a blessing in the Millennium. Neither is this Sabbath rest the present rest that Christians enjoy because God has finished His work of providing salvation for us in Christ and we have entered into it by faith. That should be clear because the rest in view is still future for us (cf. Hebrews 4:1; Hebrews 4:6; Hebrews 4:9; Hebrews 4:11).