"I know" is an English equivalent of the Latin word Sciō. The first person present indicative verb also translates as "I can," "I have knowledge" and "I know (carnally, in the biblical sense)" according to English contexts. The pronunciation will be "SKEE-o" in classical Latin and "SHEE-o" in Church Latin.
"He" is English is the personal pronoun is in Latin.
The verb est in Latin is "is" in English.
Testamentum in Latin is "testament" or "will" in English.
"Mind" in English is mens in Latin.
"Short" in English is brevis in Latin.
Quī in Latin means "what" or "which" or "who" in English.
M in Latin is "1,000" in English.
Infernus in Latin is "hellish" in English.
"Life" in English is vita in Latin.
"Humility" in English is humilitas in Latin.
"Family" in English is familia in Latin.
"Are you with me?" in English is Estis cum me? or Estis mecum? in Latin.