stand fast. See 1 Thessalonians 3:8.
hold. lay hold on, hold fast.
traditions. Greek. paradosis, as in 2 Thessalonians 3:6.
our. Should come after "by".
Related Commentaries of 2 Thessalonians 2:15
2 Thessalonians 2:15
15 Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle.