Can some explain to me how Envy and Sloth a deadly sin?
I just dont get how being jelouse of someone is a sin and i also dont get how
relaxing is a deadly sin too so can some please Explain this to me? thank you 
Envy is mentioned in the Ten Commandments; it says "Thou shalt not covet." Being envious or jealous can lead someone to commit evil acts such as revenge.
Sloth isn’t relaxing, it’s being totally lazy and not doing any work. Who wants to support an able bodied person who doesn’t contribute their fair share of work?
According to scripture both envy and gluttony are sins but not necessarily "deadly". The seven deadly sins are a catholic invention – not scriptural. See this:
They are, though certainly sins that Scripture condemns, not to be found in Scripture in any such grouping. The seven sins originated in the writings of medieval theologues and have been remarked upon by such noted personages as Pope Gregory the Great, Thomas Aquinas, Geoffery Chaucer, and John Milton.
More here:
http://www.blueletterbible.org/faq/sayings.cfm#sins
References :
Envy and sloth are fear-based conditions. Fear of poverty and fear of being worthless.
Fear – from whatever belief – increases activity in the amygdala portion of the brain. that part of the brain is responsible for animal instincts. Fear also reduced activity in the frontal cortex. The frontal cortex allows you to make well-reasoned (non-animal) decisions.
Envy and sloth turns you into an animal and prevents you from being the utmost person that you can be
References :
Envy is mentioned in the Ten Commandments; it says "Thou shalt not covet." Being envious or jealous can lead someone to commit evil acts such as revenge.
Sloth isn’t relaxing, it’s being totally lazy and not doing any work. Who wants to support an able bodied person who doesn’t contribute their fair share of work?
References :