# Let us

Paul includes his readers and other believers with himself. 

# Let us walk appropriately, as in the day

"Let us walk in a visible way knowing, that everyone can see us" 

# sexual immorality or in uncontrolled lust

"sexually immoral acts" 

# strife

This refers to plotting against and arguing with other people.

# jealousy

This refers to negative feelings against another person's success or advantage over others.