Oh, those who believed! What happened to you? When you are asked to go forth in the way of Lord Allah, you are clinging heavily to the earth? Are you preferring worldly life than Hereafter? But the provision of this worldly life is nothing except a little compared with the Hereafter.
This verse is revealed in Medina for encouraging the believers for Tabuk Expedition. Since today, there is no group of believers anywhere in the world, there is no war. Instead, the odd-believer is commanded to do great Jihad with Adhikr—the Strong Weapon—against the hypocrites and Kuffar who hide and reject It as explained in verses 3: 26-27. The 1 in 1000 believer by testifying Adhikr will fulfill his aim of life by propagating It throughout the world to keep the universe in its equilibrium as explained in verse 3: 108.
The real disbelievers preferring this worldly life mentioned in 4: 150-151 are hiding and rejecting Lord’s Book Adhikr and Its 40 names. These soulless and worthless people are neither utilizing It nor are giving Adhikr It to others rejecting verses 3: 187; 6: 26 and 7: 30. The Three-Time-Knower Lord has compared them to a dog that will not change its attitude whether it is attacked or not as explained in verse 7: 175-176. Since they didn’t hear Adhikr—the Food, Cloth, and Sight of the human soul—and talk to mankind about It, they are the worst creatures near Lord as explained in verse 8: 22. See explanations 2: 201-202; 3: 185 and 6: 164.