Colossians 3:17
<3748> [whatsoever.]
in word ....... in <1722 3056> [in word.]
in ........ in ... name <1722 3686> [in the.]
giving thanks <2168> [giving.]
God <2316> [God.]
Colossians 4:3
pray <4336> [praying.]
that <2443> [that.]
a door <2374> [a door.]
The term door is used metaphorically for an entrance to any business, or occasion or opportunity of doing any thing; and consequently "a door of utterance" is an opportunity of preaching the gospel successfully. See the parallel texts.
mystery <3466> [the mystery.]
for ...................... for <4012 1223> [for.]