Passage
He that believeth and is baptized shall be saved: but he that believeth not shall he condemned.
He that believeth and is baptized shall be saved: but he that believeth not shall he condemned.
Mark 16:14 At length he appeared to the eleven as they were at table: and he upbraided them with their incredulity and hardness of heart, because they did not believe them who had seen him after he was risen again.
Mark 16:15 And he said to them: Go ye into the whole world and preach the gospel to every creature.
Mark 16:16 He that believeth and is baptized shall be saved: but he that believeth not shall he condemned.
Mark 16:17 And these signs shall follow them that believe: In my name they shall cast out devils. They shall speak with new tongues.
Mark 16:18 They shall take up serpents: and if they shall drink any deadly thing, it shall not hurt them. They shall lay their hand upon the sick: and they shall recover.
The verse centers on "believeth", "condemn", "saved", "baptized", "shall", and "condemned". It is saying that the verse draws attention to "believeth" and "condemn", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 15's "And he said to them Go ye..." into verse 17's "And these signs shall follow them that...", so "believeth" and "condemn" belong inside that flow. In Mark context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "believeth" and "condemn" with trust shaped by these words, not by a vague optimism outside the passage.