"That is, we understand this or "Because we realize this" or "We also know this"
## not made for a righteous man ##
"not given for a righteous person" or "not given to a person who obeys it" or "not given to a person who is righteous before God"
## for those who kill their fathers and mothers ##
"murderers of their fathers and also murderers of their mothers" or "those who physically hurt their fathers and mothers"
## sexually immoral people ##
This is literally the masculine form of the word for female sex worker (prostitute). In other places it is used as a metaphor for people unfaithful to God, but in this case the meaning seems to be extended to include anyone involved in sexual relations outside of marriage.
## homosexuals ##
"men who have sex with men." The word in Greek is specific to a man who has sex with another man.
## those who kidnap people for slaves ##
"those who kidnap people to sell as slaves" or "those who take people to sell as slaves"
## sound doctrine ##
"correct teachings" or "instructions that are true"
## the glorious gospel of the blessed God ##
"the gospel about the glory that belongs to the blessed God" or "the gospel of the glorious and blessed God"
## with which I have been entrusted ##
"which God has given me and made me responsible for"