You do not need to be physically strong in order to continue growing stronger spiritually. In fact, many whose physical strength has declined still maintain a fiery determination to keep progressing spiritually. (2 Cor. 4:16) Perhaps you have served Jehovah for many years and now find that failing health prevents you from doing as much as you once did. If so, do not despair. Be assured that Jehovah cherishes the faithful service you have accomplished in the past. (Heb. 6:10) And as for the present, remember that whole-souled devotion is not measured by how much we do in Jehovah’s service. Rather, we reveal the depth of our devotion by showing a positive spirit and by doing all that we physically can. (Col. 3:23) Jehovah understands our limitations and does not require more than we can give.​—Mark 12:43, 44. w19.08 3 ¶6; 5 ¶11-12