In the following passage from paragraph 41 of “The open boat” crane uses what figure speech

I never read it before

Explanation:

i'm not sure i'm so sorry i will see what i can do

the answer would be: it explains that at least one son must join the church

the expression ''as the tithe of his sons'' indicates how his father intended for at least one of his sons to serve the church. this phrase demonstrates that his father offered him as a last resort since none of his brothers chose to serve the church.

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