"Word" here is a metonym for "message." (See: [[rc://en/ta/man/translate/figs-metonymy]]) Here this means everything God has said or commanded, as in "the word of God" or "the word of truth."
Planting represents doing things that end in some kind of result, and gathering in represents experiencing the results of what one has done. AT: "for just as a farmer gathers in the fruit of whatever kind of seeds he plants, so everyone experiences the results of whatever he does" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Paul is not specifying males here. AT: "whatever a person plants" or "whatever someone plants" (See: [[rc://en/ta/man/translate/figs-gendernotations]])
Planting seeds is a metaphor for doing deeds that will have consequences later. In this case, the person is doing sinful actions because of his sinful nature. AT: "plants seed according to what he wants because of his sinful nature" or "does the things he wants to do because of his sinful nature" (See: [[rc://en/ta/man/translate/figs-metaphor]])
God punishing the person is spoken of as if the person were harvesting a crop. AT: "will receive punishment for what he did" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Planting seeds is a metaphor for doing deeds that will have consequences later. In this case, the person is doing good actions because he is listening to God's Spirit. AT: "does the things God's Spirit loves" (See: [[rc://en/ta/man/translate/figs-metaphor]])