Jesus only uses the word "parousia" in 1 chapter of the Gospels.....Matthew 24:
Matthew 24, Mark 13 and Luke's Temple/Jerusalem Discourses  harmonized
Mount of Olives and Titus
Matthew 24:
3
He is yet sitting on the mount of the Olives, the disciples toward-came to Him according to own, saying, `Tell us, 
when? shall these be 
and what? the sign of  
Thy parousiaV <3952>,
and of the full-finish<sun-teleiaV <4930> of the Age?'
27
for even as the lightning/star-flashes/astraph <796> comes-out from risings, and is appearing till of west,
thus shall be 
the parousia <3952>  of 
the Son of the Man;
37
For as even the days of the Noah thus shall be 
the parousia <3952> of the Son of the Man 
39
and not they know till came the flood and took/lifted all! away.
Thus shall be also
 the parousia <3952>  of the Son of the Man.
Mark 13
3 And of sitting of Him into 
the Mount of the Olives over against the Temple,
Peter and James and John and Andrew inquired<1905> of Him according to own
4 Tell to us! 
when these shall be being?
and 
what the sign whenever may be being about<3195> 
these.
Luke 21:7
They inquire yet of Him saying “Teacher!
when then shall these be being?
And
 what the sign whenever may be being about<3195> 
these to becoming?
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2 Thessalonians 2:
1 - And we ask you, brethren, in regard to 
the parousiaV <3952> of our Lord Jesus Christ, and of our gathering together unto Him,
8 - and then shall be revealed the Lawless One, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the manifestation of 
His parousiaV <3952>,
2 Peter 3:4
and saying, 'Where is 
the promise of His parousiaV <3952>?
for since the fathers did fall asleep, all things so remain from the beginning of the creation;'
James 5
7 Be patient then brethren, 
till the  parousiaV <3952> of the Lord;
behold the husbandman doth expect the precious fruit of the earth, being patient for it, till he may receive rain -- early and latter;
James 5 
be ye patient! and stand-fast the hearts of ye, 
that the parousia <3952> of the Lord has-neared/hggiken <1448> (5758);
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.